COMP ARF 110" F4U ARF WITH FOLDING WING ASSEMBLY
#1176
Thread Starter
My Feedback: (43)
RE: COMP ARF 110
PM (cont)
I put the wings on and the pump motor was constantly running when the wings were moving and then the motor would 'twitch' constantly at the 'end points' of the wing folds.
I'm attributing this, I believe, to the battery being almost discharged.
Initially, I thought that maybe some air pockets were along the non-clear tubing or in the cylinders, but, after charging the battery, the wings are functioning properly.
First, I release the air pressure to the accumulator and then, using a hand pump, put air pressure into the system until the wings would go UP. I ran the test and added air pressure just on the UP test as little work was needed by the system to lower the wings.
Using the hand pump, about 4-5 'pumps' were needed to attain a functioning system.
From my limited experience, the pump needs to cycle on/off about every one second.
A constant running of the motor will damage the system, in my opinion, as I noticed that the voltage regulator on top of the motor got very hot when the motor runs continuously (I immediately turned off the power when the regulator got hot: also, if the motor continuously runs).
On the safe side, I went to radio shack and bought a heat sink and some heat transfer grease and screwed it to the voltage regulator to dissipate any heat. The voltage regulator has a hole in exposed metal which, I believe, is for adding a heat sink.
I remember the corsair at warbird over Delaware smoking which was probably this regulator getting so hot that it started to smoke.
These are my observations and conclusions so they are only based on my limited experience with this system.
pictures will be loaded when the web site fixed their constant 'system errors'.
09-26-11: pictures uploaded:
I put the wings on and the pump motor was constantly running when the wings were moving and then the motor would 'twitch' constantly at the 'end points' of the wing folds.
I'm attributing this, I believe, to the battery being almost discharged.
Initially, I thought that maybe some air pockets were along the non-clear tubing or in the cylinders, but, after charging the battery, the wings are functioning properly.
First, I release the air pressure to the accumulator and then, using a hand pump, put air pressure into the system until the wings would go UP. I ran the test and added air pressure just on the UP test as little work was needed by the system to lower the wings.
Using the hand pump, about 4-5 'pumps' were needed to attain a functioning system.
From my limited experience, the pump needs to cycle on/off about every one second.
A constant running of the motor will damage the system, in my opinion, as I noticed that the voltage regulator on top of the motor got very hot when the motor runs continuously (I immediately turned off the power when the regulator got hot: also, if the motor continuously runs).
On the safe side, I went to radio shack and bought a heat sink and some heat transfer grease and screwed it to the voltage regulator to dissipate any heat. The voltage regulator has a hole in exposed metal which, I believe, is for adding a heat sink.
I remember the corsair at warbird over Delaware smoking which was probably this regulator getting so hot that it started to smoke.
These are my observations and conclusions so they are only based on my limited experience with this system.
pictures will be loaded when the web site fixed their constant 'system errors'.
09-26-11: pictures uploaded:
#1177
My Feedback: (221)
RE: COMP ARF 110
ORIGINAL: samparfitt
PM (cont)
I put the wings on and the pump motor was constantly running when the wings were moving and then the motor would 'twitch' constantly at the 'end points' of the wing folds.
I'm attributing this, I believe, to the battery being almost discharged.
Initially, I thought that maybe some air pockets were along the non-clear tubing or in the cylinders, but, after charging the battery, the wings are functioning properly.
First, I release the air pressure to the accumulator and then, using a hand pump, put air pressure into the system until the wings would go UP. I ran the test and added air pressure just on the UP test as little work was needed by the system to lower the wings.
Using the hand pump, about 4-5 'pumps' were needed to attain a functioning system.
From my limited experience, the pump needs to cycle on/off about every one second.
A constant running of the motor will damage the system, in my opinion, as I noticed that the voltage regulator on top of the motor got very hot when the motor runs continuously (I immediately turned off the power when the regulator got hot: also, if the motor continuously runs).
On the safe side, I went to radio shack and bought a heat sink and some heat transfer grease and screwed it to the voltage regulator to dissipate any heat. The voltage regulator has a hole in exposed metal which, I believe, is for adding a heat sink.
I remember the corsair at warbird over Delaware smoking which was probably this regulator getting so hot that it started to smoke.
These are my observations and conclusions so they are only based on my limited experience with this system.
pictures will be loaded when the web site fixed their constant 'system errors'.
PM (cont)
I put the wings on and the pump motor was constantly running when the wings were moving and then the motor would 'twitch' constantly at the 'end points' of the wing folds.
I'm attributing this, I believe, to the battery being almost discharged.
Initially, I thought that maybe some air pockets were along the non-clear tubing or in the cylinders, but, after charging the battery, the wings are functioning properly.
First, I release the air pressure to the accumulator and then, using a hand pump, put air pressure into the system until the wings would go UP. I ran the test and added air pressure just on the UP test as little work was needed by the system to lower the wings.
Using the hand pump, about 4-5 'pumps' were needed to attain a functioning system.
From my limited experience, the pump needs to cycle on/off about every one second.
A constant running of the motor will damage the system, in my opinion, as I noticed that the voltage regulator on top of the motor got very hot when the motor runs continuously (I immediately turned off the power when the regulator got hot: also, if the motor continuously runs).
On the safe side, I went to radio shack and bought a heat sink and some heat transfer grease and screwed it to the voltage regulator to dissipate any heat. The voltage regulator has a hole in exposed metal which, I believe, is for adding a heat sink.
I remember the corsair at warbird over Delaware smoking which was probably this regulator getting so hot that it started to smoke.
These are my observations and conclusions so they are only based on my limited experience with this system.
pictures will be loaded when the web site fixed their constant 'system errors'.
#1178
Thread Starter
My Feedback: (43)
RE: COMP ARF 110
Gary,
Let me know how the conversion works so I can convert mine.
It seems like the geared conversion will be perfect for this application plus eliminate the oily mess.
The picture on the right is the same as mine.
It is very sensitive to the amount of air pressure entered.
This evening, I removed all the air pressure and found that 5 full pumps on the hand pump gave me enough to raise the wings, IF I simulated engine vibration that allowed the wings to raise.
Adding more pressure got the wings to work better but the accumulator turned the pump on more often and for longer periods of time. This raised my concern that the pump would overheat.
Let me know how the conversion works so I can convert mine.
It seems like the geared conversion will be perfect for this application plus eliminate the oily mess.
The picture on the right is the same as mine.
It is very sensitive to the amount of air pressure entered.
This evening, I removed all the air pressure and found that 5 full pumps on the hand pump gave me enough to raise the wings, IF I simulated engine vibration that allowed the wings to raise.
Adding more pressure got the wings to work better but the accumulator turned the pump on more often and for longer periods of time. This raised my concern that the pump would overheat.
#1179
My Feedback: (221)
RE: COMP ARF 110
ORIGINAL: samparfitt
Gary,
Let me know how the conversion works so I can convert mine.
Gary,
Let me know how the conversion works so I can convert mine.
The gear we will have probably Monday. Air cylinders will still operate the doors, but the gear will all be electric.
#1180
My Feedback: (221)
RE: COMP ARF 110
ORIGINAL: samparfitt
Gary,
Let me know how the conversion works so I can convert mine.
It seems like the geared conversion will be perfect for this application plus eliminate the oily mess.
The picture on the right is the same as mine.
It is very sensitive to the amount of air pressure entered.
This evening, I removed all the air pressure and found that 5 full pumps on the hand pump gave me enough to raise the wings, IF I simulated engine vibration that allowed the wings to raise.
Adding more pressure got the wings to work better but the accumulator turned the pump on more often and for longer periods of time. This raised my concern that the pump would overheat.
Gary,
Let me know how the conversion works so I can convert mine.
It seems like the geared conversion will be perfect for this application plus eliminate the oily mess.
The picture on the right is the same as mine.
It is very sensitive to the amount of air pressure entered.
This evening, I removed all the air pressure and found that 5 full pumps on the hand pump gave me enough to raise the wings, IF I simulated engine vibration that allowed the wings to raise.
Adding more pressure got the wings to work better but the accumulator turned the pump on more often and for longer periods of time. This raised my concern that the pump would overheat.
We also have a problem with the cylinder on the left wing. The piston rod came loose inside.Again, we robbed the one from the kit we have. Don't know how much that would cost, but with the conversion, they get scrapped anyway. More money saved. As you say Sam, it just seems like a win, win.
#1182
Thread Starter
My Feedback: (43)
RE: COMP ARF 110
PM (cont)
Wing folding mechanism:
I left the wing detached for a couple days to make sure there were no leaks.
I added one more full 'manual hand' air pump pressure (for a total of six) to the accumulator and the wings seem to be working OK.
Only one comes up at a time (right one first on UP as well as DOWN) but, I'll take it!
Scott Prossen flys his F4F at 3600 RPM's so I adjusted my pitch to get the same input.
I had to adjust the 3 blade, 32" prop to about an 18 pitch and am also getting 3600 RPM's on the '250'.
This is plenty as his plane appears to be going at jet speed when he opens up the throttle (which is plenty fast for me!). This should also be much easier on all those moving parts.
I also was having trouble with the tail wheel not wanted to come down.
I had to put a spring on the end of the air cylinder attachment to overcome the slight negative angle of the mechanism. When installing the air cylinder, I could have avoiding this problem if I would have lowered the back end of the air cylinder for a better 'angle of attack' to the tail gear.
Video of engine testing with the new pitch setting:
http://www.youtube.com/watch?v=LKldZjslqSc
Post engine run head temperatures from about 160 for the lower two cylinders to around 190 degrees for the upper three cylinders.
No pictures, yet as RCU's web site gives me errors.
09-26-11:
pictures uploaded.
Wing folding mechanism:
I left the wing detached for a couple days to make sure there were no leaks.
I added one more full 'manual hand' air pump pressure (for a total of six) to the accumulator and the wings seem to be working OK.
Only one comes up at a time (right one first on UP as well as DOWN) but, I'll take it!
Scott Prossen flys his F4F at 3600 RPM's so I adjusted my pitch to get the same input.
I had to adjust the 3 blade, 32" prop to about an 18 pitch and am also getting 3600 RPM's on the '250'.
This is plenty as his plane appears to be going at jet speed when he opens up the throttle (which is plenty fast for me!). This should also be much easier on all those moving parts.
I also was having trouble with the tail wheel not wanted to come down.
I had to put a spring on the end of the air cylinder attachment to overcome the slight negative angle of the mechanism. When installing the air cylinder, I could have avoiding this problem if I would have lowered the back end of the air cylinder for a better 'angle of attack' to the tail gear.
Video of engine testing with the new pitch setting:
http://www.youtube.com/watch?v=LKldZjslqSc
Post engine run head temperatures from about 160 for the lower two cylinders to around 190 degrees for the upper three cylinders.
No pictures, yet as RCU's web site gives me errors.
09-26-11:
pictures uploaded.
#1183
My Feedback: (221)
RE: COMP ARF 110
ORIGINAL: samparfitt
PM (cont)
Wing folding mechanism:
I left the wing detached for a couple days to make sure there were no leaks.
I added one more full 'manual hand' air pump pressure (for a total of six) to the accumulator and the wings seem to be working OK.
Only one comes up at a time (right one first on UP as well as DOWN) but, I'll take it!
Scott Prossen flys his F4F at 3600 RPM's so I adjusted my pitch to get the same input.
I had to adjust the 3 blade, 32'' prop to about an 18 pitch and am also getting 3600 RPM's on the '250'.
This is plenty as his plane appears to be going at jet speed when he opens up the throttle (which is plenty fast for me!). This should also be much easier on all those moving parts.
I also was having trouble with the tail wheel not wanted to come down.
I had to put a spring on the end of the air cylinder attachment to overcome the slight negative angle of the mechanism. When installing the air cylinder, I could have avoiding this problem if I would have lowered the back end of the air cylinder for a better 'angle of attack' to the tail gear.
Video of engine testing with the new pitch setting:
http://www.youtube.com/watch?v=LKldZjslqSc
No pictures, yet as RCU's web site gives me errors.
PM (cont)
Wing folding mechanism:
I left the wing detached for a couple days to make sure there were no leaks.
I added one more full 'manual hand' air pump pressure (for a total of six) to the accumulator and the wings seem to be working OK.
Only one comes up at a time (right one first on UP as well as DOWN) but, I'll take it!
Scott Prossen flys his F4F at 3600 RPM's so I adjusted my pitch to get the same input.
I had to adjust the 3 blade, 32'' prop to about an 18 pitch and am also getting 3600 RPM's on the '250'.
This is plenty as his plane appears to be going at jet speed when he opens up the throttle (which is plenty fast for me!). This should also be much easier on all those moving parts.
I also was having trouble with the tail wheel not wanted to come down.
I had to put a spring on the end of the air cylinder attachment to overcome the slight negative angle of the mechanism. When installing the air cylinder, I could have avoiding this problem if I would have lowered the back end of the air cylinder for a better 'angle of attack' to the tail gear.
Video of engine testing with the new pitch setting:
http://www.youtube.com/watch?v=LKldZjslqSc
No pictures, yet as RCU's web site gives me errors.
BTW, nice job on the cowl flaps. I intend to do the same thing on our #2 airframe.
#1185
My Feedback: (221)
RE: COMP ARF 110
ORIGINAL: samparfitt
Thanks, Gary.
Cowl flap install starts at post # 354:
http://www.rcuniverse.com/forum/m_80...15/key_/tm.htm
Thanks, Gary.
Cowl flap install starts at post # 354:
http://www.rcuniverse.com/forum/m_80...15/key_/tm.htm
#1187
Thread Starter
My Feedback: (43)
RE: COMP ARF 110
gear mod:
I'm short on time to mail my gear update to Darrell so I made a temporary mod using some 1/8" thick aluminum bar stock and 1/4" long #6 hex head bolts.
ps: pictures have also been uploaded for previous posts now that the web site has fixed their problem (post 1176 and 1182).
I'm short on time to mail my gear update to Darrell so I made a temporary mod using some 1/8" thick aluminum bar stock and 1/4" long #6 hex head bolts.
ps: pictures have also been uploaded for previous posts now that the web site has fixed their problem (post 1176 and 1182).
#1188
RE: COMP ARF 110
Hey guys, I know someone that maidened his CARF Corsair this past weekend! All went real well for him! Congrats my friend. After almost thhree years I think you well deserved the good results.
Shhhhh! I can't tell who and spoil his thunder.....ha ha ha.
Many Happy Landings,
Scott
Shhhhh! I can't tell who and spoil his thunder.....ha ha ha.
Many Happy Landings,
Scott
#1189
Join Date: Dec 2005
Location: buckeye, AZ
Posts: 131
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RE: COMP ARF 110
ORIGINAL: Scott Prossen
Hey guys, I know someone that maidened his CARF Corsair this past weekend! All went real well for him! Congrats my friend. After almost thhree years I think you well deserved the good results.
Shhhhh! I can't tell who and spoil his thunder.....ha ha ha.
Many Happy Landings,
Scott
Hey guys, I know someone that maidened his CARF Corsair this past weekend! All went real well for him! Congrats my friend. After almost thhree years I think you well deserved the good results.
Shhhhh! I can't tell who and spoil his thunder.....ha ha ha.
Many Happy Landings,
Scott
UnclJoe 's Corsair flew this past Friday! [link=http://www.rcuniverse.com/forum/m_10576473/mpage_14/key_/tm.htm]Corsair Maiden[/link]
Video Here [link=http://www.youtube.com/watch?v=J7rC7Z6I5_s&feature=player_embedded]Maiden[/link]
Slideshow video also. [link=http://www.youtube.com/watch?v=rJTA8vtqqtQ]slideshow maiden[/link]
#1190
RE: COMP ARF 110
MAIDEN FLIGHT:
(I'm at Scott's house so I'm logged onto his PC, and 'handle').
I took my F4U to Mac's rally of the eagles flyin so I could maiden her.
Since Dino was there, I let him do the honors (if Dino is good enough to fly Brian's B-26, he's good enough to fly mine!).
The crew consisted of Dino, PJ (behind me) and Scott.
She flew great with only minor trim corrections.
Sam Parfitt
http://www.youtube.com/watch?v=Qh4V7HR1icE
(I'm at Scott's house so I'm logged onto his PC, and 'handle').
I took my F4U to Mac's rally of the eagles flyin so I could maiden her.
Since Dino was there, I let him do the honors (if Dino is good enough to fly Brian's B-26, he's good enough to fly mine!).
The crew consisted of Dino, PJ (behind me) and Scott.
She flew great with only minor trim corrections.
Sam Parfitt
http://www.youtube.com/watch?v=Qh4V7HR1icE
#1195
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Location: Fort Worth,
TX
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RE: COMP ARF 110
Hello to those needing BAG or IV BAGS.
I am a physician and can order any bag you need from a 100cc saline bag to a 250cc bag to a 500cc bag, just let me know and I will get it for you at cost plus shipping. If you want to get 2 or 3 at a time or what ever. Gosh, I hate to hear of the problems you had.
You can private message me, or send a private email.
Usually I can get a shipment in 2 or 3 days from the time my nurse places the order and would ship full if you want or drain the saline out.
Just let me know.
I got depressed about my plane and put er up and have not been building on er. I flew my Comp ARF P-51 the last Saturday, it was wonderful, and flew my Yellow Zero. Kind of getting the itch to start building the Comp ARF Corsair again. For those that do not remember ... I ordered the pre painted gel coat "NAVY BLUE" Corsair, the ARF version, and what was shipped to me was green !! Thus I have been painting the plane.
Dr. Bill
I am a physician and can order any bag you need from a 100cc saline bag to a 250cc bag to a 500cc bag, just let me know and I will get it for you at cost plus shipping. If you want to get 2 or 3 at a time or what ever. Gosh, I hate to hear of the problems you had.
You can private message me, or send a private email.
Usually I can get a shipment in 2 or 3 days from the time my nurse places the order and would ship full if you want or drain the saline out.
Just let me know.
I got depressed about my plane and put er up and have not been building on er. I flew my Comp ARF P-51 the last Saturday, it was wonderful, and flew my Yellow Zero. Kind of getting the itch to start building the Comp ARF Corsair again. For those that do not remember ... I ordered the pre painted gel coat "NAVY BLUE" Corsair, the ARF version, and what was shipped to me was green !! Thus I have been painting the plane.
Dr. Bill
#1196
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Join Date: Jul 2007
Location: Wetumpka,
AL
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RE: COMP ARF 110
That is very nice of you to offer to go to all that trouble for your fellow modelers Bill. I hope you get back on your Corsair again, and get her in the air. You will be glad that you did. It is an awesome airplane on the ground and in the air.
I can imagine your disgust when you saw the color, after paying to have it painted, but you'll be happy when you finish her.
Good luck with your build.
Jerry
I can imagine your disgust when you saw the color, after paying to have it painted, but you'll be happy when you finish her.
Good luck with your build.
Jerry
#1197
Thread Starter
My Feedback: (43)
RE: COMP ARF 110
some video that I found:
History of Vought:
part 1:
Early years and birth of the XF4U.
http://www.youtube.com/watch?v=pHiM-...eature=related
part 2:
prop design, radial engine assembly, carrier landing techniques/philosophy.
http://www.youtube.com/watch?v=FJn2x...eature=related
part 3:
WW II in the pacific, Marine use, British use. Lots of good video.
http://www.youtube.com/watch?v=aAIBR...eature=related
part 4:
US Navy ships finally get the Corsair, beginning of the Korean war.
http://www.youtube.com/watch?v=bdtrY...eature=related
part 5:
Korea, final summary.
http://www.youtube.com/watch?v=kcuuE...eature=related
History of Vought:
part 1:
Early years and birth of the XF4U.
http://www.youtube.com/watch?v=pHiM-...eature=related
part 2:
prop design, radial engine assembly, carrier landing techniques/philosophy.
http://www.youtube.com/watch?v=FJn2x...eature=related
part 3:
WW II in the pacific, Marine use, British use. Lots of good video.
http://www.youtube.com/watch?v=aAIBR...eature=related
part 4:
US Navy ships finally get the Corsair, beginning of the Korean war.
http://www.youtube.com/watch?v=bdtrY...eature=related
part 5:
Korea, final summary.
http://www.youtube.com/watch?v=kcuuE...eature=related
#1198
My Feedback: (221)
RE: COMP ARF 110
ORIGINAL: samparfitt
some video that I found:
History of Vought:
part 1:
Early years and birth of the XF4U.
http://www.youtube.com/watch?v=pHiM-...eature=related
part 2:
prop design, radial engine assembly, carrier landing techniques/philosophy.
http://www.youtube.com/watch?v=FJn2x...eature=related
part 3:
WW II in the pacific, Marine use, British use. Lots of good video.
http://www.youtube.com/watch?v=aAIBR...eature=related
part 4:
US Navy ships finally get the Corsair, beginning of the Korean war.
http://www.youtube.com/watch?v=bdtrY...eature=related
part 5:
Korea, final summary.
http://www.youtube.com/watch?v=kcuuE...eature=related
some video that I found:
History of Vought:
part 1:
Early years and birth of the XF4U.
http://www.youtube.com/watch?v=pHiM-...eature=related
part 2:
prop design, radial engine assembly, carrier landing techniques/philosophy.
http://www.youtube.com/watch?v=FJn2x...eature=related
part 3:
WW II in the pacific, Marine use, British use. Lots of good video.
http://www.youtube.com/watch?v=aAIBR...eature=related
part 4:
US Navy ships finally get the Corsair, beginning of the Korean war.
http://www.youtube.com/watch?v=bdtrY...eature=related
part 5:
Korea, final summary.
http://www.youtube.com/watch?v=kcuuE...eature=related
BTW, I talked to Mitch and it sounds like the wing conversion is gaining some interest since the video was posted.
#1200
My Feedback: (221)
RE: COMP ARF 110
ORIGINAL: samparfitt
Yo Gary,
I emailed him for my wing conversion.
Nice work on your new corsair build.
I sent my gear to Darrell for the weld fix and should be getting it back, pretty soon.
Yo Gary,
I emailed him for my wing conversion.
Nice work on your new corsair build.
I sent my gear to Darrell for the weld fix and should be getting it back, pretty soon.